WO2007109113A2 - Vessel closing laminate - Google Patents

Vessel closing laminate Download PDF

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Publication number
WO2007109113A2
WO2007109113A2 PCT/US2007/006595 US2007006595W WO2007109113A2 WO 2007109113 A2 WO2007109113 A2 WO 2007109113A2 US 2007006595 W US2007006595 W US 2007006595W WO 2007109113 A2 WO2007109113 A2 WO 2007109113A2
Authority
WO
WIPO (PCT)
Prior art keywords
layer
seal
laminate
substrate
vessel closing
Prior art date
Application number
PCT/US2007/006595
Other languages
French (fr)
Other versions
WO2007109113A3 (en
Inventor
Victor Sachs
David John O'brien
Andrew Fenwick Mclean
Original Assignee
Illinois Tool Works Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=36694339&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2007109113(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Illinois Tool Works Inc. filed Critical Illinois Tool Works Inc.
Priority to MX2008012003A priority Critical patent/MX2008012003A/en
Priority to JP2009501463A priority patent/JP2009533279A/en
Priority to NZ572512A priority patent/NZ572512A/en
Priority to BRPI0709022-6A priority patent/BRPI0709022A2/en
Priority to AU2007227488A priority patent/AU2007227488B2/en
Priority to US12/227,573 priority patent/US20090304964A1/en
Priority to CA2646951A priority patent/CA2646951C/en
Publication of WO2007109113A2 publication Critical patent/WO2007109113A2/en
Publication of WO2007109113A3 publication Critical patent/WO2007109113A3/en
Priority to US13/348,842 priority patent/US8852725B2/en

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D51/00Closures not otherwise provided for
    • B65D51/18Arrangements of closures with protective outer cap-like covers or of two or more co-operating closures
    • B65D51/20Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D53/00Sealing or packing elements; Sealings formed by liquid or plastics material
    • B65D53/04Discs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2251/00Details relating to container closures
    • B65D2251/0003Two or more closures
    • B65D2251/0006Upper closure
    • B65D2251/0015Upper closure of the 41-type
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2251/00Details relating to container closures
    • B65D2251/0003Two or more closures
    • B65D2251/0068Lower closure
    • B65D2251/0093Membrane
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/13Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352Polymer or resin containing [i.e., natural or synthetic]
    • Y10T428/1376Foam or porous material containing
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/24Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/24Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24826Spot bonds connect components
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/249921Web or sheet containing structurally defined element or component
    • Y10T428/249953Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249982With component specified as adhesive or bonding agent
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/249921Web or sheet containing structurally defined element or component
    • Y10T428/249953Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249987With nonvoid component of specified composition
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/249921Web or sheet containing structurally defined element or component
    • Y10T428/249953Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249987With nonvoid component of specified composition
    • Y10T428/249991Synthetic resin or natural rubbers

Definitions

  • the present invention relates to a vessel closing laminate. It is commonplace in the packaging of a wide variety of materials ranging from pharmaceutical products to instant coffee that a closure is provided in the form of a seal connected to the neck of a container and a screw cap covering and protecting the seal which provides a re- closable cap after the seal has been removed to gain access to the container. Often the closure is such that the underside of the seal has a heat sensitive adhesive coating or a meltable plastics layer covered by a metal foil.
  • the metal foil can provide the substrate of the seal or may include a separate substrate formed from plastics material or paper. The seal is then placed against the neck of a container and sandwiched against it by the applied screw cap.
  • An induction heating step then heats the metal foil and in turn activates the heat sensitive adhesive layer or melts the plastic layer so that on cooling, the seal bonds to the neck of the container.
  • a difficulty often encountered by eventual users is removal of such seals from the container. Attempts have thus been made to include a tab extending sideways from the neck of the container so that the consumer can grip this to facilitate removal of the seal.
  • US-A-5702015 also discloses such a seal but, in this case, the seal substrate is formed by an extrusion process in which a first layer of plastics material is extruded, followed by extrusion lamination of a second layer of release material using a third layer of extrusion material which is of the same composition to that of the first layer which integrates with the first layer where the second layer is not present.
  • the tab which is formed by the third layer, is formed integrally with the first layer without the need for adhesive between the layers.
  • the screw-cap may include some form of liner in addition to the seal material.
  • a difficulty with a two-component system is that the seal material and the liner which are provided separately, have to be fitted inside a screw- cap in two separate operations. This naturally adds to the expense and difficulty of using the system.
  • In order to minimise the processing steps included in producing a seal and liner system there has been focus on the development of a one component seal and liner system which avoids the need for two separate fitting operations.
  • EP-A-1472153 describes a one component seal and liner system, for attaching into a screw cap, which includes a tab.
  • the seal portion of the system is adhered to the liner portion by means of a release layer such that the seal and liner release from each other with a peel strength in the range from 20 to 9Og at a rate of 1500mm/min on a sample strip 25mm wide.
  • the adhesive used is low density polyethylene.
  • a further example of a one component seal and liner system is DE9108868 in which the seal and liner portions are adhered by means of wax for the purposes of handling and fitting the sytsem.
  • the wax melts and is absorbed into an absorbent secondary liner whereby the seal portion and liner substantially separate from each other.
  • This system includes a tab which is formed by adhering the top layer of seal portion to the remainder of the seal across part only of the area of the seal.
  • a problem with this system is that the seal portion has a tendancy to tear in use when a user attempts to remove the seal from a container to which it is attached by pulling on the tab.
  • a further problem which can be identified with such systems is that in attaching the system including the tab to a container to be sealed, an uneven level of bonding is achieved with there being a propensity for higher bonds to be formed under the tabbed portion of the liner as compared to the non-tabbed portion. There is a further danger that on heating the metal foil, the top layer of the seal will burn where the heat transferred to this layer is too great.
  • WO-A-9605055 multilayer composite films having a barrier layer of amorphous carbon between a heat sealable layer and a polymeric base layer are described.
  • the laminate may be used as part of an induction innerseal for a screw- capped container, for instance a system including an absorbent liner adhered to the top of the composite film by means of a wax layer. Upon induction heating the wax melts and is absorbed into the liner to release the adhesion of the liner.
  • Another use of the laminates is to form top-tabbed innerseals, i.e. vessel closing assemblies including a free tab lying wholly within the circumference of the seal.
  • the present invention provides a vessel closing laminate comprising: a seal laminate comprising a bottom subassembly of layers including a bottom food contact layer and a foil layer; and a seal substrate attached to the uppermost layer of the bottom subassembly of layers wherein the seal substrate has a bottom foam layer and a top plastics material layer and further includes a free tab lying wholly within the circumference of the seal; a wax layer on top of the plastics material layer of the seal substrate, and an absorbent liner adhered to the plastics material layer of the substrate by means of the wax layer.
  • the present invention overcomes the above disadvantage associated with the prior art, more specifically, the inclusion of the foam layer as an essential component of the seal substrate means that, in use when attached to a container to be sealed, when the user pulls on the tab to remove the seal, the seal substrate is resistant to tearing.
  • the bottom subassembly of layers are induction heat sealable and comprise a layer of aluminium foil coated on its lowermost face which will ultimately be in contact with the neck of a container with a layer of hot melt adhesive.
  • a layer of polyester may be interposed between the hot melt adhesive and aluminium foil layer to isolate the foil from the contents of any container to which it is attached and so prevent corrosion of the foil layer and contamination of food.
  • this polyethylene terephthalate layer generally has a thickness in the range from 10 to 14 ⁇ m. It is attached to the foil layer using either a solvent or solvent-less adhesive lamination. Where it is included, the polyethylene terephthalate has already been attached to the foil layer by the supplier.
  • the thickness of the foil layer is in the range from 12-30 ⁇ m, more preferably 20-25 ⁇ m.
  • the bottom subassembly of layers of the seal laminate are conduction heat sealable.
  • the bottom subassembly of layers of the seal comprise a layer of metal foil coated on its lowermost face which will ultimately be in contact with the neck of a container with glassine.
  • Glassine is a paper based material which is formed from pulp which has been beaten to the extent that its constituent fibres are all very short resulting in a brittle material which is almost transparent. Glassine is commercially available from, for example, Ahlstrom in France. The glassine is adhered to the lowermost face of the metal foil by a layer of adhesive.
  • the bottom glassine layer of the seal may be adhered to the neck of a container using a conventional adhesive such as, for example, polyvinyl acetate.
  • the thickness of the foil layer may be as low as 9 ⁇ m.
  • the top layer of the bottom subassembly of layers is adhered to a seal substrate.
  • the adhesion is by means of a polymer adhesive. Suitable adhesives include polyurethane.
  • the seal substrate has a bottom foam layer.
  • the foam layer has a thickness in the range from 70 to 300 ⁇ m.
  • the foam layer is preferably a foamed polyolefin; for example, polyethylene.
  • the foam layer is included in the structure to impart structural integrity. The inclusion of this foam layer means that the problems associated with the prior art are overcome. More specifically, this foam layer has a cushioning effect such that the pressure exerted around the circumference of the laminate when it has been cut to form a vessel closing assembly which is adhered to the neck of the container, is equalised.
  • this foam layer has a cushioning effect such that the pressure exerted around the circumference of the laminate when it has been cut to form a vessel closing assembly which is adhered to the neck of the container, is equalised.
  • a further advantage is that in induction heat sealing to adhere a vessel closing assembly cut from the laminate of the present invention, the foam layer acts an insulating layer. This regulates the amount of heat which reaches the wax layer such that the wax layer is melted but the risk of burning the liner portion is minimised. As the foam layer imparts structural integrity to the laminate, it is possible to use thinner liner components than are routinely used. It is also to be noted that the inclusion of the foam layer is further advantageous when it comes to a consideration of the processing steps by which a vessel closing assembly cut from the laminate of the present invention is attached to a container to be sealed. A popular way of doing this is to use a vacuum process wherein the vessel closing assembly is picked up and placed in position by use of a vacuum.
  • bottom subassembly of layers comprise heat induction sealable layers
  • the inclusion of a foam layer ensures that any surface irregularities are minimised.
  • the seal substrate of the present invention includes a tab which lies wholly within the circumference of the seal.
  • a tab is included to facilitate the eventual removal of the seal from a container to which it has been adhered.
  • the tab may be produced by adhering the bottom foam layer and the top plastics material of the seal substrate to each other over only a portion of the diameter thus producing a partially delaminated structure. Structural integrity may be given to the tab by interposing a further layer of plastics material between the bottom foam layer and top plastics material layer of the seal substrate in the region in which they are not bonded and then adhering the further layer of plastics material to the top plastics material layer.
  • the further layer of plastics material is adhered to the top plastics material by means of a polymeric adhesive.
  • the tab portion may also be printed.
  • the final tab will be comprised of the further layer of interposed plastics material, a polymeric adhesive and the top plastics material layer.
  • Such a tab has an overall thickness preferably in the range from 80 to 10O ⁇ m.
  • the further layer of plastics material is polyester and the top plastic material layer is made from polyester or polyamide.
  • the seal portion of the vessel closing laminate is formed using an extrusion technique.
  • a technique involves the steps of: (a) feeding a seal laminate comprising the bottom subassembly of layers and the bottom foam layer of the seal substrate to a laminating station;
  • the feed may comprise a plurality of narrow tabstocks arranged at regularly spaced apart intervals. In this way, a wide sheet of seal laminate including a tabstock may be formed which can then be cut to size.
  • the bottom face of the tabstock and the top face of the foam layer of the seal laminate are brought into contact. At this stage there is no adhesion between the two feeds.
  • the two feeds are fed in contact with each other to the laminating station. In order to achieve this, the two feeds must approach the laminating station from the same side.
  • the polymeric adhesive which is continuously extruded is selected from polyethylene or polyethylene acrylate.
  • the polymeric adhesive has a melt flow index in the range from 2 to 17 dg/min.
  • the coat weight of the adhesive is in the range from 15 to 50gm "2 .
  • step (d) preferably the top face of the primary substrate and the bottom surface of the plastic film shock are adhered together with a bond strength greater than 15N/12.5 mm at 330 mm/min when the tabstock is pulled at 90° to the machine direction and 180° to the primary substrate.
  • the top layer of the seal substrate is a plastics material layer.
  • the plastics material is polyester or polyamide, most preferably polyester.
  • the polyester layer is polyethylene terephthalate.
  • the polyester layer may be a surface treated polyethylene terephthalate such as, for example, Lumirror 10.47 (RTM).
  • RTM Lumirror 10.47
  • This polyester layer preferably has a thickness in the range from 15 to 40 ⁇ m.
  • the top plastic material layer of the seal substrate forms the top layer of the seal laminate of the vessel closing laminate.
  • the seal is adhered to the liner by means of a wax layer on top of the plastics material layer.
  • the wax is food grade wax.
  • the wax may be applied in either a dot or hatch pattern and is applied with a coat weight in the range from 5 to 20 gnrr 2 .
  • the adhesion between the wax layer and the absorbent liner is of a temporary nature. This means that the seal and liner will remain adhered together in the final laminate during subsequent processing steps including cutting and fitting into the cap of a container. However, in use in the final sealed container with a cap, the adhesion is no longer present because the wax has been absorbed by the liner as a result of the heat from the induction heating step.
  • the wax layer serves to adhere the seal and liner together sufficiently strongly that they will remain adhered during processing operations.
  • the wax layer binds the top plastics material layer of the seal substrate to the liner with a strength such that the peel strength is, after manufacture and before induction heat sealing of the seal to a container to be sealed greater than 3N as measured at a rate of 500mm/min on a sample strip 50mm wide.
  • the sample is tested at 90° using a roller jig as based on the Floating Roller Method, ASTM method 1464:1995.
  • the peel strength after manufacture and before induction heat sealing was also measured to be greater than 18Og as measured at a rate of 1500mm/min on a sample strip 25mm wide. The sample is tested at 90°.
  • the vessel closing laminate is cut to size to form a vessel closing assembly.
  • the vessel closing assembly is inserted into a cap which, in turn, is applied to the neck of a container to be sealed. Heat is then applied to seal the bottom subassembly of layers to the neck of the container. The heat applied causes the wax layer to melt. The molten wax is absorbed by the liner layer and, as such, at this stage of processing is no longer present as a separate adhesive layer. Thus at this point, the seal and liner are no longer adhered to one another. The vessel closing assembly can thus be adhered to the screw cap without any concern of ripping the seal upon opening because the bond between the seal and liner is no longer present.
  • the vessel closing assembly will simply separate between the top polyester layer and the absorbent liner without requiring significant force.
  • the absorbent liner which has absorbed the wax layer will remain in the cap and the seal will remain adhered to the neck of the container.
  • the absorbent liner may be formed of a layer of food grade cardboard or pulpboard.
  • the liner may be formed from a synthetic material such as a layer of foamed plastic material to which a paper layer has been adhered to the bottom surface. Where a synthetic liner is used, the paper layer as a bottom layer is required as the layer in contact with the wax layer which needs to be able to absorb the molten wax.
  • the liner preferably has a thickness in the range from 400 to 1500 ⁇ m.
  • the vessel closing laminate of the present invention may be cut into disks to form a vessel closing assembly and may be adhered within a screw cap.
  • the screw cap may generally be a conventional one. Once the vessel closing assembly has been adhered within a screw cap, the screw cap may be screwed on to the open neck of a container thus sandwiching the vessel closing assembly between the open neck of the container and the top of the cap. The vessel closing assembly is then adhered to the open neck of the container by applying heat either by induction heating or conduction heating.
  • Figure 1 is a cross-section though an example of a vessel closing assembly according to the present invention with a vertical dimension greatly exaggerated;
  • Figure 2 is a cross-section through a screw cap showing the vessel closing assembly in place;
  • Figure 3 is a perspective view showing the seal in place on the neck of a container.
  • Figure 4 is a schematic representation of a process by which the seal laminate may be formed.
  • the vessel closing laminate (1 ) comprises a liner portion (2) and a seal laminate
  • the vessel closing laminate 1 is formed by a laminate of a number of layers which, starting from the bottom comprise a coating of hot melt adhesive (4) deposited typically at a rate of in the range 12 to 60 g/m 2 and may include polyester coatings, polyethylene, ethylene vinyl acetate, polypropylene, ethylene-acrylic acid co-polymers, or Surlyn (RTM); a layer of aluminium foil (5) which is 20 ⁇ m thick; a layer of polymeric adhesive (6) applied, for instance at a rate in the range of 3g/m 2 to 20 g/m 2 ; a layer of polyethylene foam (7) 125 ⁇ m thick; a layer of polyethylene terephthalate (8) which has been printed extending only part way across the layer of foam (7) and not adhered to the layer of foam (7); a layer of polymeric adhesive (9) applied, for instance at a rate of 20 to 50g/m 2 ; a layer of surface treated polyethylene terephthalate (10) 36 ⁇ m thick which is
  • the adhesive layers (6 and 9) are typically polyurethane or polyethylene acrylate. As described previously, in one embodiment, the adhesive layer (9) may be extruded between the layer of polyethylene terephthalate (8) and the layer of polyethylene terepthalate (10).
  • a seal laminate comprising heat sealable layers (4) for adhesion to a container to be sealed, a foil layer (5) and a top layer of polyethylene foam (7) is obtained commercially from lsco Jacques Schindler AG.
  • This seal laminate is rolled onto a first feed roll (13) in the laminating apparatus.
  • the second feed roll (14) in the laminating apparatus is the source of the tabstock, which in this case, is a layer of polyethylene terephthalate (8).
  • the width of the layer of polyethylene terephthalate (8) is in the range from 25-60mm.
  • a third feed roll (15) is loaded with a PET stock (10) which can be obtained commercially from Toray, Europe.
  • the thickness of the PET stock (10) is in the range from 23-36 ⁇ m.
  • the PET stock (10) used is a co-extruded PET heat seal layer in order to ensure optimal adhesion.
  • the seal laminate (3a), tabstock (8) and PET stock (10) are simultaneously fed to the laminating station (6) where an extruder (17) is positioned vertically above the point of contact between the feeds. Prior to reaching the laminating station (16), the seal laminate (3a) and tabstock (8) are brought into contact to form a primary substrate
  • Polyethylene acrylate (9) is then extruded continuously as a curtain from the extruder (17) between the top face of the primary laminate (1a) and the bottom face of the PET stock (10).
  • the extrusion conditions were such that a temperature of approximately 230 0 C was attained at the nip.
  • the rollers (18) and (19) are moving at a speed of 70m/min relative to the speed of application of the adhesive, the bottom face of the PET stock (10) and the resulting primary laminate including a tabstock is passed via a chill roller (31 ) to be rolled on to a final product roll (32).
  • This process is illustrated schematically in Fig 4.
  • a bond is formed between the seal portion (3) and the liner portion (2).
  • the peel strength after manufacture and before induction heat sealing to a container to be sealed of the absorbent liner from the top polyester layer of the seal is measured to be greater than 3N at 500 ⁇ m/min on a 50mm wide sample at 90° using a roller jig based on ASTM method 1464:1995, the Floating Roller method.
  • This bond holds the two portions (2 and 3) together during subsequent processing and handling.
  • the presence of the polyethylene terephthalate partial layer (8) and the fact that it is not bonded to the foam layer (7) provides a separate tab portion formed by the layers (8 and 10) which is not adhered to the layer (7) and so forms a liftable tab (50) (shown in Figure 3) which will be described subsequently.
  • the one-component liner (1) is press-fitted inside the top of a screw cap (20) and adhered in place by means of a hot melt adhesive.
  • a screw cap equipped with a vessel closing assembly (1) in accordance with the present invention is screwed onto the open neck of a bottle (30) so sandwiching the vessel closing assembly (1) between the open neck of the bottle (30) and the top of the cap
  • the cap (20) and bottle (30) are then subjected to an induction heating step in which the aluminium foil (5) is heated around its periphery by the generation of eddy currents within it which, in turn, melts the coating (40) of hot melt adhesive to bond the seal portion (3) onto the open neck of the bottle (30). This has the effect of melting the wax layer (11). The molten wax is absorbed by the liner (12). The sealed container is then distributed.
  • seal portion (3) When the screw cap (20) is removed from the bottle (30) by the eventual user the seal portion (3) remains adhered to the open neck of the bottle (30) whilst the liner portion (1 ) is retained in the cap.
  • the seal portion (3) and liner portion (2) part between the top polyethylene terephthalate layer (10), and layer of food grade cardboard (12) during this initial removal of the cap (20) from the neck of the bottle (30).
  • the eventual consumer can then easily remove the seal portion (3) from the neck of the bottle (30) merely by gripping the tab portion (50) formed by the layers (8) and (10) with the manual force applied to the tab (50) overcoming the adhesion provided between the hot melt coating (4) and the neck of the bottle (30) to enable the entire seal portion (3) to be removed to allow the eventual user to gain access to the contents of the bottle
  • the liner portion (2) remains adhered within the cap to form a secondary seal when the bottle is reclosed by the cap.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Laminated Bodies (AREA)
  • Wrappers (AREA)

Abstract

A vessel closing laminate comprising: a seal laminate (1) comprising a bottom subassembfy of layers including a foil layer (5); and a seal substrate attached to the uppermost layer of the bottom subassembly of layers wherein the seal substrate has a bottom foam layer (2) and a top plastic material layer (10) and further includes a free tab (50) lying wholly within the circumference of the seal; a wax layer (11) on top of the plastic material layer of the seal substrate; and an absorbent liner (12) adhered to the plastic material layer of the seal substrate by means of the wax layer.

Description

VESSEL CLOSING LAMINATE
The present invention relates to a vessel closing laminate. It is commonplace in the packaging of a wide variety of materials ranging from pharmaceutical products to instant coffee that a closure is provided in the form of a seal connected to the neck of a container and a screw cap covering and protecting the seal which provides a re- closable cap after the seal has been removed to gain access to the container. Often the closure is such that the underside of the seal has a heat sensitive adhesive coating or a meltable plastics layer covered by a metal foil. The metal foil can provide the substrate of the seal or may include a separate substrate formed from plastics material or paper. The seal is then placed against the neck of a container and sandwiched against it by the applied screw cap. An induction heating step then heats the metal foil and in turn activates the heat sensitive adhesive layer or melts the plastic layer so that on cooling, the seal bonds to the neck of the container. A difficulty often encountered by eventual users is removal of such seals from the container. Attempts have thus been made to include a tab extending sideways from the neck of the container so that the consumer can grip this to facilitate removal of the seal.
One way of overcoming this, which is proving popular at present, is the so- called "Top Tab" (Registered trademark) system, which is described fully in US-A- 4961986. This system includes a multilayer substrate which is partly de-laminated to provide a lifting tab lying wholly within the circumference of the container neck. In US- A-4961986 this is achieved by forming the substrate from multiple layers which are adhered together over only a part of their extent. US-A-5702015 also discloses such a seal but, in this case, the seal substrate is formed by an extrusion process in which a first layer of plastics material is extruded, followed by extrusion lamination of a second layer of release material using a third layer of extrusion material which is of the same composition to that of the first layer which integrates with the first layer where the second layer is not present. In this way the tab, which is formed by the third layer, is formed integrally with the first layer without the need for adhesive between the layers. As shown in US-A-4961986 the screw-cap may include some form of liner in addition to the seal material. A difficulty with a two-component system is that the seal material and the liner which are provided separately, have to be fitted inside a screw- cap in two separate operations. This naturally adds to the expense and difficulty of using the system. In order to minimise the processing steps included in producing a seal and liner system, there has been focus on the development of a one component seal and liner system which avoids the need for two separate fitting operations.
In this regard, EP-A-1472153 describes a one component seal and liner system, for attaching into a screw cap, which includes a tab. In the product detailed, the seal portion of the system is adhered to the liner portion by means of a release layer such that the seal and liner release from each other with a peel strength in the range from 20 to 9Og at a rate of 1500mm/min on a sample strip 25mm wide. The adhesive used is low density polyethylene. One disadvantage of such a system is that, when fixed in a screw cap, in order that release occurs as required, it is often the case that the system needs to be rotatable within the cap rather than fixed in place. This means that screw caps which have a circumferentially extending rib are required thus increasing the costs of the overall process.
A further example of a one component seal and liner system is DE9108868 in which the seal and liner portions are adhered by means of wax for the purposes of handling and fitting the sytsem. On heating of the metal foil in the seal portion the wax melts and is absorbed into an absorbent secondary liner whereby the seal portion and liner substantially separate from each other. On opening the seal portion remains adhered to the container and the liner remains in the cap. This system includes a tab which is formed by adhering the top layer of seal portion to the remainder of the seal across part only of the area of the seal.
A problem with this system is that the seal portion has a tendancy to tear in use when a user attempts to remove the seal from a container to which it is attached by pulling on the tab. A further problem which can be identified with such systems is that in attaching the system including the tab to a container to be sealed, an uneven level of bonding is achieved with there being a propensity for higher bonds to be formed under the tabbed portion of the liner as compared to the non-tabbed portion. There is a further danger that on heating the metal foil, the top layer of the seal will burn where the heat transferred to this layer is too great.
In WO-A-9605055 multilayer composite films having a barrier layer of amorphous carbon between a heat sealable layer and a polymeric base layer are described. The laminate may be used as part of an induction innerseal for a screw- capped container, for instance a system including an absorbent liner adhered to the top of the composite film by means of a wax layer. Upon induction heating the wax melts and is absorbed into the liner to release the adhesion of the liner. Another use of the laminates is to form top-tabbed innerseals, i.e. vessel closing assemblies including a free tab lying wholly within the circumference of the seal.
It is clear that there is a need for a vessel closing assembly which is economical to use but avoids the problems associated with the prior art.
The present invention provides a vessel closing laminate comprising: a seal laminate comprising a bottom subassembly of layers including a bottom food contact layer and a foil layer; and a seal substrate attached to the uppermost layer of the bottom subassembly of layers wherein the seal substrate has a bottom foam layer and a top plastics material layer and further includes a free tab lying wholly within the circumference of the seal; a wax layer on top of the plastics material layer of the seal substrate, and an absorbent liner adhered to the plastics material layer of the substrate by means of the wax layer. By the combination of including a foam layer within the seal substrate and using a wax layer to adhere the seal substrate to the liner, the present invention overcomes the above disadvantage associated with the prior art, more specifically, the inclusion of the foam layer as an essential component of the seal substrate means that, in use when attached to a container to be sealed, when the user pulls on the tab to remove the seal, the seal substrate is resistant to tearing.
In one embodiment of the present invention, the bottom subassembly of layers are induction heat sealable and comprise a layer of aluminium foil coated on its lowermost face which will ultimately be in contact with the neck of a container with a layer of hot melt adhesive. A layer of polyester may be interposed between the hot melt adhesive and aluminium foil layer to isolate the foil from the contents of any container to which it is attached and so prevent corrosion of the foil layer and contamination of food. Where included , this polyethylene terephthalate layer generally has a thickness in the range from 10 to 14μm. It is attached to the foil layer using either a solvent or solvent-less adhesive lamination. Where it is included, the polyethylene terephthalate has already been attached to the foil layer by the supplier. Preferably the thickness of the foil layer is in the range from 12-30μm, more preferably 20-25μm.
In a further embodiment of the present invention the bottom subassembly of layers of the seal laminate are conduction heat sealable.
In a yet further embodiment of the present invention, the bottom subassembly of layers of the seal comprise a layer of metal foil coated on its lowermost face which will ultimately be in contact with the neck of a container with glassine. Glassine is a paper based material which is formed from pulp which has been beaten to the extent that its constituent fibres are all very short resulting in a brittle material which is almost transparent. Glassine is commercially available from, for example, Ahlstrom in France. The glassine is adhered to the lowermost face of the metal foil by a layer of adhesive. While conventionally in a system comprising glassine and foil adjacent to one another, a wax based adhesive would be used to adhere the glassine to the foil, it is preferable in the invention to use a polyethylene- based or a water-based adhesive in order to ensure a sufficiently strong bond is formed. In use, the bottom glassine layer of the seal may be adhered to the neck of a container using a conventional adhesive such as, for example, polyvinyl acetate. In this embodiment, the thickness of the foil layer may be as low as 9μm. In use, where the primary laminate is removed from a container neck, failure will occur in the glassine layer such that paper fibres remain adhered to the neck of the container but the primary laminate is still removed as a single piece. The advantage of the paper fibres remaining adhered to the neck is that it provides a tamper evident system.
The top layer of the bottom subassembly of layers is adhered to a seal substrate. The adhesion is by means of a polymer adhesive. Suitable adhesives include polyurethane. The seal substrate has a bottom foam layer. Preferably the foam layer has a thickness in the range from 70 to 300μm. The foam layer is preferably a foamed polyolefin; for example, polyethylene. The foam layer is included in the structure to impart structural integrity. The inclusion of this foam layer means that the problems associated with the prior art are overcome. More specifically, this foam layer has a cushioning effect such that the pressure exerted around the circumference of the laminate when it has been cut to form a vessel closing assembly which is adhered to the neck of the container, is equalised. Thus the difference in thickness of the non tabbed portion as compared to the tabbed portion, does not result in a difference in the strength of the bond formed. That is to say that a uniform bond strength between the laminate and neck of the container is obtained around the whole circumference.
A further advantage is that in induction heat sealing to adhere a vessel closing assembly cut from the laminate of the present invention, the foam layer acts an insulating layer. This regulates the amount of heat which reaches the wax layer such that the wax layer is melted but the risk of burning the liner portion is minimised. As the foam layer imparts structural integrity to the laminate, it is possible to use thinner liner components than are routinely used. It is also to be noted that the inclusion of the foam layer is further advantageous when it comes to a consideration of the processing steps by which a vessel closing assembly cut from the laminate of the present invention is attached to a container to be sealed. A popular way of doing this is to use a vacuum process wherein the vessel closing assembly is picked up and placed in position by use of a vacuum. Where the prior art assemblies are subjected to such a process, there is a problem that the seal laminates folds in on itself under the force of the vacuum causing distortion and creasing. If such a seal is then adhered to a container to be sealed, it will have a tendancy to leak because the circumference of the seal no longer corresponds directly to the circumference of the container to be sealed . This is a problem avoided with the present invention because the foam liner imparts sufficient structural integrity that the laminate will remain rigid and flat when subjected to a vacuum.
Where the bottom subassembly of layers comprise heat induction sealable layers, the inclusion of a foam layer ensures that any surface irregularities are minimised.
The seal substrate of the present invention includes a tab which lies wholly within the circumference of the seal. A tab is included to facilitate the eventual removal of the seal from a container to which it has been adhered. In its most simple embodiment, the tab may be produced by adhering the bottom foam layer and the top plastics material of the seal substrate to each other over only a portion of the diameter thus producing a partially delaminated structure. Structural integrity may be given to the tab by interposing a further layer of plastics material between the bottom foam layer and top plastics material layer of the seal substrate in the region in which they are not bonded and then adhering the further layer of plastics material to the top plastics material layer. Preferably the further layer of plastics material is adhered to the top plastics material by means of a polymeric adhesive. If required, the tab portion may also be printed. Where the tab is formed in this way, the final tab will be comprised of the further layer of interposed plastics material, a polymeric adhesive and the top plastics material layer. Such a tab has an overall thickness preferably in the range from 80 to 10Oμm. Preferably the further layer of plastics material is polyester and the top plastic material layer is made from polyester or polyamide.
In one embodiment of the present invention, the seal portion of the vessel closing laminate is formed using an extrusion technique. Such a technique involves the steps of: (a) feeding a seal laminate comprising the bottom subassembly of layers and the bottom foam layer of the seal substrate to a laminating station;
(b) feeding a tabstock which is narrower than the seal laminate to the laminating station such that the bottom of the tabstock and the top foam layer of the seal laminate come into contact to form a primary substrate, the top face of which is partly comprised of the top face of the tabstock and partly comprised of the foam layer of the seal laminate prior to reaching the laminating station;
(c) feeding a plastics material film stock which has a top and bottom surface to the laminating station; and (d) continuously extruding a polymeric adhesive between the top face of the primary substrate and the bottom surface of the plastic film stock;
(e) applying a molten wax layer to the top surface of the plastic material film stock; and
(f) adhering an absorbent liner to the wax layer while it is still molten. In step (b), in a further embodiment of the present invention, the feed may comprise a plurality of narrow tabstocks arranged at regularly spaced apart intervals. In this way, a wide sheet of seal laminate including a tabstock may be formed which can then be cut to size.
Prior to reaching the laminating station, the bottom face of the tabstock and the top face of the foam layer of the seal laminate are brought into contact. At this stage there is no adhesion between the two feeds. The two feeds are fed in contact with each other to the laminating station. In order to achieve this, the two feeds must approach the laminating station from the same side.
Preferably the polymeric adhesive which is continuously extruded is selected from polyethylene or polyethylene acrylate. Most preferably the polymeric adhesive has a melt flow index in the range from 2 to 17 dg/min. Preferably the coat weight of the adhesive is in the range from 15 to 50gm"2.
In step (d), preferably the top face of the primary substrate and the bottom surface of the plastic film shock are adhered together with a bond strength greater than 15N/12.5 mm at 330 mm/min when the tabstock is pulled at 90° to the machine direction and 180° to the primary substrate.
The top layer of the seal substrate is a plastics material layer. Preferably the plastics material is polyester or polyamide, most preferably polyester. In a particularly preferred embodiment, the polyester layer is polyethylene terephthalate. The polyester layer may be a surface treated polyethylene terephthalate such as, for example, Lumirror 10.47 (RTM). This polyester layer preferably has a thickness in the range from 15 to 40μm. The top plastic material layer of the seal substrate forms the top layer of the seal laminate of the vessel closing laminate. The seal is adhered to the liner by means of a wax layer on top of the plastics material layer. Preferably the wax is food grade wax. The wax may be applied in either a dot or hatch pattern and is applied with a coat weight in the range from 5 to 20 gnrr2. The adhesion between the wax layer and the absorbent liner is of a temporary nature. This means that the seal and liner will remain adhered together in the final laminate during subsequent processing steps including cutting and fitting into the cap of a container. However, in use in the final sealed container with a cap, the adhesion is no longer present because the wax has been absorbed by the liner as a result of the heat from the induction heating step. The wax layer serves to adhere the seal and liner together sufficiently strongly that they will remain adhered during processing operations. Preferably the wax layer binds the top plastics material layer of the seal substrate to the liner with a strength such that the peel strength is, after manufacture and before induction heat sealing of the seal to a container to be sealed greater than 3N as measured at a rate of 500mm/min on a sample strip 50mm wide. The sample is tested at 90° using a roller jig as based on the Floating Roller Method, ASTM method 1464:1995.
The peel strength after manufacture and before induction heat sealing was also measured to be greater than 18Og as measured at a rate of 1500mm/min on a sample strip 25mm wide. The sample is tested at 90°.
In use, the vessel closing laminate is cut to size to form a vessel closing assembly. The vessel closing assembly is inserted into a cap which, in turn, is applied to the neck of a container to be sealed. Heat is then applied to seal the bottom subassembly of layers to the neck of the container. The heat applied causes the wax layer to melt. The molten wax is absorbed by the liner layer and, as such, at this stage of processing is no longer present as a separate adhesive layer. Thus at this point, the seal and liner are no longer adhered to one another. The vessel closing assembly can thus be adhered to the screw cap without any concern of ripping the seal upon opening because the bond between the seal and liner is no longer present. Thus on opening, the vessel closing assembly will simply separate between the top polyester layer and the absorbent liner without requiring significant force. The absorbent liner which has absorbed the wax layer will remain in the cap and the seal will remain adhered to the neck of the container. The absorbent liner may be formed of a layer of food grade cardboard or pulpboard. In an alternative embodiment, the liner may be formed from a synthetic material such as a layer of foamed plastic material to which a paper layer has been adhered to the bottom surface. Where a synthetic liner is used, the paper layer as a bottom layer is required as the layer in contact with the wax layer which needs to be able to absorb the molten wax. The liner preferably has a thickness in the range from 400 to 1500μm.
The vessel closing laminate of the present invention may be cut into disks to form a vessel closing assembly and may be adhered within a screw cap. The screw cap may generally be a conventional one. Once the vessel closing assembly has been adhered within a screw cap, the screw cap may be screwed on to the open neck of a container thus sandwiching the vessel closing assembly between the open neck of the container and the top of the cap. The vessel closing assembly is then adhered to the open neck of the container by applying heat either by induction heating or conduction heating.
An embodiment of the present invention will now be described with reference to the following figures in which:
Figure 1 is a cross-section though an example of a vessel closing assembly according to the present invention with a vertical dimension greatly exaggerated; Figure 2 is a cross-section through a screw cap showing the vessel closing assembly in place;
Figure 3 is a perspective view showing the seal in place on the neck of a container; and
Figure 4 is a schematic representation of a process by which the seal laminate may be formed.
The vessel closing laminate (1 ) comprises a liner portion (2) and a seal laminate
(3) attached together. The vessel closing laminate 1 is formed by a laminate of a number of layers which, starting from the bottom comprise a coating of hot melt adhesive (4) deposited typically at a rate of in the range 12 to 60 g/m2 and may include polyester coatings, polyethylene, ethylene vinyl acetate, polypropylene, ethylene-acrylic acid co-polymers, or Surlyn (RTM); a layer of aluminium foil (5) which is 20 μm thick; a layer of polymeric adhesive (6) applied, for instance at a rate in the range of 3g/m2 to 20 g/m2; a layer of polyethylene foam (7) 125μm thick; a layer of polyethylene terephthalate (8) which has been printed extending only part way across the layer of foam (7) and not adhered to the layer of foam (7); a layer of polymeric adhesive (9) applied, for instance at a rate of 20 to 50g/m2; a layer of surface treated polyethylene terephthalate (10) 36 μm thick which is adhered both to the foam (7) and the polyethylene terephthalate layer (8); a layer of wax (11) applied in a dot pattern with a coat weight of 4 to 18 gm"2 and, a layer (12) of food grade cardboard which is approximately 900 μm thick.
The adhesive layers (6 and 9) are typically polyurethane or polyethylene acrylate. As described previously, in one embodiment, the adhesive layer (9) may be extruded between the layer of polyethylene terephthalate (8) and the layer of polyethylene terepthalate (10). In such an embodiment a seal laminate comprising heat sealable layers (4) for adhesion to a container to be sealed, a foil layer (5) and a top layer of polyethylene foam (7) is obtained commercially from lsco Jacques Schindler AG. As an alternative to purchasing this part of the structure, it may be formed by lamination as described above. This seal laminate is rolled onto a first feed roll (13) in the laminating apparatus.
The second feed roll (14) in the laminating apparatus is the source of the tabstock, which in this case, is a layer of polyethylene terephthalate (8). The width of the layer of polyethylene terephthalate (8) is in the range from 25-60mm.
A third feed roll (15) is loaded with a PET stock (10) which can be obtained commercially from Toray, Europe. The thickness of the PET stock (10) is in the range from 23-36μm. The PET stock (10) used is a co-extruded PET heat seal layer in order to ensure optimal adhesion.
The seal laminate (3a), tabstock (8) and PET stock (10) are simultaneously fed to the laminating station (6) where an extruder (17) is positioned vertically above the point of contact between the feeds. Prior to reaching the laminating station (16), the seal laminate (3a) and tabstock (8) are brought into contact to form a primary substrate
(1a).
Polyethylene acrylate (9) is then extruded continuously as a curtain from the extruder (17) between the top face of the primary laminate (1a) and the bottom face of the PET stock (10). The extrusion conditions were such that a temperature of approximately 2300C was attained at the nip. The rollers (18) and (19) are moving at a speed of 70m/min relative to the speed of application of the adhesive, the bottom face of the PET stock (10) and the resulting primary laminate including a tabstock is passed via a chill roller (31 ) to be rolled on to a final product roll (32). This process is illustrated schematically in Fig 4. As a result of the presence of the wax layer (11), a bond is formed between the seal portion (3) and the liner portion (2). The peel strength after manufacture and before induction heat sealing to a container to be sealed of the absorbent liner from the top polyester layer of the seal is measured to be greater than 3N at 500μm/min on a 50mm wide sample at 90° using a roller jig based on ASTM method 1464:1995, the Floating Roller method. This bond holds the two portions (2 and 3) together during subsequent processing and handling. The presence of the polyethylene terephthalate partial layer (8) and the fact that it is not bonded to the foam layer (7) provides a separate tab portion formed by the layers (8 and 10) which is not adhered to the layer (7) and so forms a liftable tab (50) (shown in Figure 3) which will be described subsequently.
After formation of the laminate it is die cut to form individual discs of vessel closing assembly (1). The one-component liner (1) is press-fitted inside the top of a screw cap (20) and adhered in place by means of a hot melt adhesive. In use, a screw cap equipped with a vessel closing assembly (1) in accordance with the present invention is screwed onto the open neck of a bottle (30) so sandwiching the vessel closing assembly (1) between the open neck of the bottle (30) and the top of the cap
(20). The cap (20) and bottle (30) are then subjected to an induction heating step in which the aluminium foil (5) is heated around its periphery by the generation of eddy currents within it which, in turn, melts the coating (40) of hot melt adhesive to bond the seal portion (3) onto the open neck of the bottle (30). This has the effect of melting the wax layer (11). The molten wax is absorbed by the liner (12). The sealed container is then distributed.
When the screw cap (20) is removed from the bottle (30) by the eventual user the seal portion (3) remains adhered to the open neck of the bottle (30) whilst the liner portion (1 ) is retained in the cap. The seal portion (3) and liner portion (2) part between the top polyethylene terephthalate layer (10), and layer of food grade cardboard (12) during this initial removal of the cap (20) from the neck of the bottle (30). The eventual consumer can then easily remove the seal portion (3) from the neck of the bottle (30) merely by gripping the tab portion (50) formed by the layers (8) and (10) with the manual force applied to the tab (50) overcoming the adhesion provided between the hot melt coating (4) and the neck of the bottle (30) to enable the entire seal portion (3) to be removed to allow the eventual user to gain access to the contents of the bottle
(30). The liner portion (2) remains adhered within the cap to form a secondary seal when the bottle is reclosed by the cap.

Claims

1. A vessel closing laminate comprising: a seal laminate comprising a bottom subassembly of layers including a foil layer; and a seal substrate attached to the uppermost layer of the bottom subassembly of layers wherein the seal substrate has a bottom foam layer and a top plastics material layer and further includes a free tab lying wholly within the circumference of the seal; a wax layer on top of the plastics material layer of the seal substrate; and an absorbent liner adhered to the plastics material layer of the seal substrate by means of the wax layer.
2, The laminate according to claim 1, wherein the liner is formed from cardboard or pulpboard.
3. The laminate according to claim 1 or 2, wherein the top plastics material layer of the seal substrate is a polyester
4. The laminate according to claim 3 wherein the polyester is polyethylene terephthalate.
5. The laminate according to any preceding claim, wherein the bottom food contact layers are induction heat sealable.
6. The laminate according to any preceding claim, wherein the wax layer has a dot or hatch patterning.
7. The laminate according to any preceding claim, wherein the wax layer has a coatweight in the range from 4 to 18gm'2.
8. The laminate according to any preceding claim wherein the wax layer is adhered to the top plastic material layer of the seal substrate with a peel strength of greater than 3N as measured at a rate of 500mm/min on a sample strip 50mm wide in accordance with ASTM 1464: 1995.
9. The laminate according to any preceding claim wherein the free tab is formed by the top plastic material layer being adhered to the bottom foam layer of the seal substrate over only a portion of the diameter of the seal.
10. The laminate according to claim 9, wherein a further layer of polyethylene terephthalate, nylon or polypropylene is interposed between the top plastics material layer and the bottom foam layer of the seal substrate in the region where they are not bonded together.
11. A screw cap including the vessel closing laminate according to any preceding claim which has been cut to form a vessel closing assembly.
12. The screwcap according to claim 11 wherein the vessel closing assembly is adhered within the cap.
13. The screw cap according to claim 12, wherein the vessel closing assembly is fixed in position in the cap.
14. A container fitted with a cap according to claim 11 wherein the bottom subassembly of layers of the vessel closing assembly are sealed to the mouth of the container and the wax layer has been absorbed by the absorbent liner.
15. A method of forming a vessel closing laminate comprising the steps of:
(a) feeding a seal laminate comprising the bottom subassembly of layers and the bottom foam layer of the seal substrate to a laminating station;
(b) feeding a tabstock which is narrower than the seal laminate to the laminating station such that the bottom of the tabstock and the top foam layer of the seal laminate come into contact to form a primary substrate, the top face of which is partly comprised of the top face of the tabstock and partly comprised of the foam layer of the seal laminate prior to reaching the laminating station;
(c) feeding a plastics material film stock which has a top and bottom surface to the laminating station;
(d) continuously extruding a polymeric adhesive between the top face of the primary substrate and the bottom surface of the plastic material film stock; (e) applying a molten wax layer to the top surface of the plastic material film stock; and
(f) adhering an absorbent liner to the wax layer while it is still molten.
16. The method according to claim 15, wherein in step(d), the top face of the primary substrate and the bottom surface of the plastic film stock are adhered together with a bond strength greater than 15N/12.5mm at 330mm/min when the tabstock is pulled at 90° to the machine direction and 180° to the primary substrate.
17. The method according to claim 15 or 16, wherein in step (e), the molten wax layer is applied to obtain a coat weight in the range from 4 to 18gm~2
18. The method of any of claims 15 to 17 wherein the polymeric adhesive has a melt flow index in the range from 2 to 17 dg/min.
19. The method according to any of claims 15 to 18, wherein the polymeric adhesive is ethylene acrylate.
20. The method according to any of claims 15 to 19, which includes a further step of cutting the vessel closing laminate into disc shapes to form vessel closing assemblies.
21. The method according to any of claims 15 to 20 wherein in step (e), the molten wax layer is applied in a dot or hatched pattern.
PCT/US2007/006595 2006-03-20 2007-03-16 Vessel closing laminate WO2007109113A2 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
MX2008012003A MX2008012003A (en) 2006-03-20 2007-03-16 Vessel closing laminate.
JP2009501463A JP2009533279A (en) 2006-03-20 2007-03-16 Container closure laminate
NZ572512A NZ572512A (en) 2006-03-20 2007-03-16 Vessel closing laminate with a a free tab enabling ease of vessel opening
BRPI0709022-6A BRPI0709022A2 (en) 2006-03-20 2007-03-16 container closure laminate, screw cap including laminate, capped container and container closure laminate forming method
AU2007227488A AU2007227488B2 (en) 2006-03-20 2007-03-16 Vessel closing laminate
US12/227,573 US20090304964A1 (en) 2006-03-20 2007-03-16 Vessel Closing Laminate
CA2646951A CA2646951C (en) 2006-03-20 2007-03-16 Vessel closing laminate
US13/348,842 US8852725B2 (en) 2006-03-20 2012-01-12 Vessel closing laminate

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP06111411.2 2006-03-20
EP06111411.2A EP1837288B2 (en) 2006-03-20 2006-03-20 Vessel closing laminate

Related Child Applications (2)

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US12/227,573 A-371-Of-International US20090304964A1 (en) 2006-03-20 2007-03-16 Vessel Closing Laminate
US13/348,842 Continuation US8852725B2 (en) 2006-03-20 2012-01-12 Vessel closing laminate

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WO2007109113A2 true WO2007109113A2 (en) 2007-09-27
WO2007109113A3 WO2007109113A3 (en) 2009-09-24

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US (2) US20090304964A1 (en)
EP (1) EP1837288B2 (en)
JP (1) JP2009533279A (en)
CN (1) CN101636261A (en)
AR (1) AR059924A1 (en)
AT (1) ATE431303T1 (en)
AU (1) AU2007227488B2 (en)
BR (1) BRPI0709022A2 (en)
CA (1) CA2646951C (en)
DE (1) DE602006006791D1 (en)
ES (1) ES2326754T3 (en)
MX (1) MX2008012003A (en)
NZ (1) NZ572512A (en)
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8057896B2 (en) 2005-01-06 2011-11-15 Selig Sealing Products, Inc. Pull-tab sealing member with improved heat distribution for a container
US8201385B2 (en) 2007-08-24 2012-06-19 Selig Sealing Products, Inc. Multi-purpose covering and method of hygienically covering a container top
US8522990B2 (en) 2007-03-23 2013-09-03 Selig Sealing Products, Inc. Container seal with removal tab and holographic security ring seal
US8703265B2 (en) 2007-03-23 2014-04-22 Selig Sealing Products, Inc. Container seal with removal tab and piercable holographic security seal
US8715825B2 (en) 2005-01-06 2014-05-06 Selig Sealing Products, Inc. Two-piece pull-tab sealing member with improved heat distribution for a container
US8852725B2 (en) 2006-03-20 2014-10-07 Selig Sealing Products, Inc. Vessel closing laminate
US8906185B2 (en) 2006-12-20 2014-12-09 Selig Sealing Products, Inc. Laminate
US9624008B2 (en) 2007-03-23 2017-04-18 Selig Sealing Products, Inc. Container seal with removal tab and security ring seal
US10259626B2 (en) 2012-03-08 2019-04-16 Selig Sealing Products, Inc. Container sealing member with protected security component and removal tab

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006108853A1 (en) 2005-04-15 2006-10-19 Illinois Tool Works Inc. Seal stock laminate
DE602007002705D1 (en) * 2007-06-22 2009-11-19 Selig Sealing Products Inc Closure for a container
US8937550B2 (en) * 2010-04-14 2015-01-20 Eagile, Inc. Container seal with radio frequency identification tag, and method of making same
CA2800615C (en) * 2010-04-14 2019-04-30 Eagile, Inc. Container seal with radio frequency identification tag, and method of making same
WO2012135353A1 (en) 2011-03-28 2012-10-04 Selig Sealing Products, Inc. Laminate structure to stabilize a dimensionally unstable layer
DE102011106768B4 (en) * 2011-05-12 2018-10-04 Alfelder Kunststoffwerke Herm. Meyer Gmbh Sealing washer with tab
WO2012177895A1 (en) 2011-06-24 2012-12-27 Selig Sealing Products, Inc. Sealing member with removable portion for exposing and forming a dispensing feature
CN103998148B (en) * 2011-10-17 2019-12-31 苏舍米克斯帕克有限公司 Cartridge, method for manufacturing such a cartridge and multi-component cartridge
US9028963B2 (en) 2012-09-05 2015-05-12 Selig Sealing Products, Inc. Tamper evident tabbed sealing member having a foamed polymer layer
US9193513B2 (en) 2012-09-05 2015-11-24 Selig Sealing Products, Inc. Tabbed inner seal
CA2846161C (en) * 2013-03-15 2020-10-20 Selig Sealing Products, Inc. Inner seal with a sub tab layer
CA2846021C (en) 2013-03-15 2021-06-08 Selig Sealing Products, Inc. Inner seal with an overlapping partial tab layer
WO2015119988A1 (en) 2014-02-05 2015-08-13 Selig Sealing Products, Inc. Dual aluminum tamper indicating tabbed sealing member
EP3265397B1 (en) 2015-03-03 2020-01-15 Selig Sealing Products, Inc. Tabbed sealing member, laminate to die cut tabbed sealing member therefrom and method of making tabbed sealing member
US10934069B2 (en) 2016-10-28 2021-03-02 Selig Sealing Products, Inc. Sealing member for use with fat containing compositions
MX2019004807A (en) 2016-10-28 2019-08-26 Selig Sealing Products Inc Single aluminum tamper indicating tabbed sealing member.
US11866242B2 (en) 2016-10-31 2024-01-09 Selig Sealing Products, Inc. Tabbed inner seal
EP3672797B1 (en) * 2017-08-24 2022-06-01 BASF Coatings GmbH Preparation of composite materials from film, solid adhesive polymer, and a polyurethane layer
US11724863B2 (en) 2018-07-09 2023-08-15 Selig Sealing Products, Inc. Tabbed seal with oversized tab
US11254481B2 (en) 2018-09-11 2022-02-22 Selig Sealing Products, Inc. Enhancements for tabbed seal
US11305513B2 (en) * 2019-04-15 2022-04-19 Phoenix Closures, Inc. Laminate liner
CA3162627A1 (en) * 2019-11-29 2021-06-03 Selig Sealing Products, Inc. Foil free tabbed seal

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5381914A (en) * 1991-05-09 1995-01-17 Toyo Seikan Kaisha, Ltd. Container closure with liner

Family Cites Families (132)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4206165A (en) 1976-03-26 1980-06-03 Tri-Seal International, Inc. Method of co-extrusion with foam core
US4772650A (en) * 1985-04-12 1988-09-20 Minnesota Mining And Manufacturing Co. Polymeric coating for container induction innerseal
US4741791A (en) 1986-07-18 1988-05-03 Bemis Associates Inc. Flocked transfer material and method of making heat-transferable indicia therefrom
US4837061A (en) 1987-08-10 1989-06-06 Alcan International Limited Tamper-evident structures
US5149386A (en) 1987-08-10 1992-09-22 Alcan International Limited Tamper-evident structures
US5015318A (en) 1987-08-10 1991-05-14 Alcan International Limited Method of making tamper-evident structures
US4818577A (en) * 1987-08-20 1989-04-04 Minnesota Mining And Manufacturing Company Synthetic liner capable of resisting chemical attack and high temperature
CA1336708C (en) 1987-09-09 1995-08-15 Michael P. Galda Sealing member for a container
US5055150A (en) 1989-02-03 1991-10-08 Alcan International Limited Process and apparatus for producing coated polymer sheets having oxygen and moisture barrier properties and coated polymer sheets thus produced
US5098495A (en) 1989-02-03 1992-03-24 Alcan International Limited Process for coating a packaging film with a transparent barrier coating
US5178967A (en) 1989-02-03 1993-01-12 Alcan International Limited Bilayer oxide film and process for producing same
US5071710A (en) 1989-02-03 1991-12-10 Alcan International Limited Packaging film with a transparent barrier coating
US5057365A (en) 1989-07-12 1991-10-15 501 Tri-Seal International, Inc. Cap liner and process for using cap liner to seal containers
CA2042822A1 (en) * 1990-06-12 1991-12-13 Hak-Rhim Han Innerseal that can be applied by microwave energy
DE9108868U1 (en) 1991-07-18 1991-09-12 Alcan Deutschland GmbH, 37075 Göttingen container
US5601200A (en) 1991-09-06 1997-02-11 Tri-Seal International, Inc. Cap liner for hot filled container and method
US5197618A (en) 1991-10-15 1993-03-30 Top Seal, Inc. Tamper-evident fusion bonded pull-tab induction foil lining system for container closures
NO175579B1 (en) 1991-12-20 1994-11-03 Unidense Technology Gmbh Method and apparatus for loading particulate material into vertical rudders
EP0562649B1 (en) * 1992-03-25 1996-05-01 Agfa-Gevaert N.V. A cap with an induction seal closure
JP3140198B2 (en) * 1992-08-07 2001-03-05 大倉工業株式会社 Stretch shrink packaging film
DE9303786U1 (en) * 1993-03-15 1993-05-06 Alfelder Kunststoffwerke Herm. Meyer GmbH, 3320 Alfeld Closure for an opening of a container
FR2716407B1 (en) 1994-02-22 1996-04-12 Joints Manuf Generale Method for producing a sealable seal for closing a container with closure by plug or capsule and sealable seal thus obtained.
US5702015A (en) 1994-05-04 1997-12-30 Selig Sealing Products, Inc. Closure seal for container
WO1995030576A1 (en) 1994-05-09 1995-11-16 Alfelder Kunststoffwerke Herm. Meyer Gmbh Process for sealing containers made of glass or the like and sealing disks which adhere to the mouth of such a container
DE4417345C2 (en) 1994-05-09 1997-04-10 Alfelder Kunststoffw Meyer H Method for sealing containers made of glass or the like and sealing washers adhering to the mouth of the container opening
DE4424666C2 (en) 1994-07-14 1997-05-28 Alfelder Kunststoffw Meyer H Sealing washer
AU2968695A (en) * 1994-08-16 1996-03-07 Minnesota Mining And Manufacturing Company Barrier films
US5712042A (en) * 1995-04-17 1998-01-27 Kerr Group Inc. Second seal for closure liners
ES2155594T3 (en) 1995-12-12 2001-05-16 Alusuisse Tech & Man Ag PROCEDURE FOR MANUFACTURING BLISTER CONTAINERS.
ES2208781T3 (en) 1996-04-25 2004-06-16 Alfelder Kunststoffwerke Herm. Meyer Gmbh SHEET COMBINATION AND COMBINATION DISK FOR A CONTAINER CLOSURE.
US5871112A (en) * 1996-05-03 1999-02-16 Selig Sealing Products, Inc. Synthetic replacement for pulpboard in waxbond innerseals
EP0824154B1 (en) 1996-08-15 2002-05-08 Alcan Technology & Management AG Reflector with resistant surface
US6378715B1 (en) 1996-09-17 2002-04-30 Tri-Seal Holdings, Inc. Separating closure liner with pressure sensitive adhesive
CN2279333Y (en) 1997-01-14 1998-04-22 金建民 Aluminium & plastic compound bottle cover sealing disc
US6139931A (en) 1997-07-10 2000-10-31 Tri-Seal Holdings, Inc. High barrier closure liner for carbonated beverage containers and the like
US6194042B1 (en) 1997-07-10 2001-02-27 Tri-Seal Holdings, Inc. High barrier closure liner with oxygen absorbing capabilities
DE19748842A1 (en) 1997-11-05 1999-05-12 Alfelder Kunststoffw Meyer H Process for producing a tape from sealing washer material and such a tape
JP3053602B2 (en) * 1997-11-10 2000-06-19 大平製紙株式会社 Inner sealing material for sealing the container mouth
EP0939037A1 (en) 1998-02-26 1999-09-01 Alusuisse Technology & Management AG Packaging material
ES2213889T5 (en) 1998-09-01 2009-03-01 ALCAN TECHNOLOGY & MANAGEMENT AG COVER AND PROCEDURE FOR MANUFACTURING.
US6082566A (en) 1998-09-29 2000-07-04 Tech Seal Products, Inc. Resealable liner and induction seal combination
US6131754A (en) * 1998-12-15 2000-10-17 Illinois Tool Works Inc. Synthetic two-piece induction seal
JP2000237577A (en) 1998-12-25 2000-09-05 Toyo Eng Corp Catalyst packing method and device therefor
JP2000255621A (en) 1999-03-12 2000-09-19 Dainippon Printing Co Ltd Lid material
DE19920572C2 (en) 1999-05-04 2002-06-13 Alfelder Kunststoffw Meyer H Screw cap with sealing washer
DE19920586A1 (en) 1999-05-04 2000-11-16 Alfelder Kunststoffw Meyer H Sealing disc and film composite for a container closure
EP1057749B1 (en) 1999-06-02 2003-04-02 Alcan Technology & Management AG Press-through package
US6458302B1 (en) 2000-03-23 2002-10-01 Tekni-Plex, Inc. System and method for forming plastic articles
EP1154289A1 (en) 2000-05-09 2001-11-14 Alcan Technology & Management AG Reflector
US6602309B2 (en) 2000-05-26 2003-08-05 Performance Systematix, Inc. Vented, grooved back, heat induction foil
JP2002037310A (en) * 2000-07-28 2002-02-06 Mitsubishi Alum Co Ltd Content sticking preventive lid, and manufacturing method thereof
EP1201418A1 (en) 2000-10-24 2002-05-02 Alcan Technology & Management AG Process for manufacturing of a beltlike product
JP2003165566A (en) * 2001-11-29 2003-06-10 Denki Kagaku Kogyo Kk Lid material and manufacturing method for molded lid
DE10200925A1 (en) 2002-01-12 2003-07-24 Hydro Aluminium Deutschland Foil for food packaging
DE10204281B4 (en) 2002-02-02 2008-02-07 Constantia Hueck Folien Gmbh & Co. Kg Printed material webs, in particular material webs printed with fluorescent material, their production and their use
CA2475353C (en) * 2002-02-07 2007-12-04 Illinois Tool Works Inc. Container closure
US20050208242A1 (en) 2002-02-07 2005-09-22 Illinois Tool Works, Inc. Container closure
BR8200231U (en) 2002-02-08 2003-09-30 Geraldiscos Com Ind E Repres D Bottle seal arrangement
US6719173B2 (en) * 2002-03-25 2004-04-13 Owens-Brockway Plastic Products Inc. Multilayer container package for dispensing a liquid product
JP3819323B2 (en) 2002-05-20 2006-09-06 株式会社東芝 Hall element and electric quantity measuring device
EP1393892A1 (en) 2002-08-29 2004-03-03 Alcan Technology & Management Ltd. Foamed plastic plate
EP1407880A1 (en) 2002-10-07 2004-04-14 Alcan Technology & Management Ltd. Method and apparatus for producing a multilayered packaging film
ITPD20020291A1 (en) 2002-11-14 2004-05-15 Bp Europack Spa PACKING PARTICULARLY FOR THE PACKAGING OF FOOD PRODUCTS.
ITPD20020310A1 (en) 2002-12-05 2004-06-06 Bp Europack Spa LACERABLE FILM IN PLASTIC MATERIAL PARTICULARLY
PL1604344T3 (en) 2003-03-18 2009-01-30 Alcan Int Ltd Container label with tear-off part
BR0300992A (en) 2003-03-28 2004-11-03 Geraldiscos Com Ind E Represen Laminated material for simultaneously sealing and sealing a vial, and process for securing laminated material in a vial to simultaneously seal and seal
JP4441195B2 (en) 2003-04-17 2010-03-31 昭和電工パッケージング株式会社 Deoxygenated lid and deoxygenated sealed container
AU2004234365B2 (en) 2003-04-24 2009-10-22 Cat Tech (Europe) Limited Method and apparatus for loading catalyst
US20040247749A1 (en) * 2003-06-04 2004-12-09 Snapdragon Sealed single serve containers for wine
EP1722962B1 (en) 2003-12-18 2010-10-20 Tekni-Plex Europe NV Film for packing liquids or the like and method for manufacturing such a film
US7287660B2 (en) 2004-03-16 2007-10-30 Tekni-Plex, Inc. Two-compartment container
AT413942B (en) 2004-04-16 2006-07-15 Constantia Packaging Ag METHOD FOR PRODUCING PACKAGING SYSTEMS FOR TECHNICAL AND PHARMACEUTICAL INDIVIDUAL DOSING
DE502004003284D1 (en) 2004-07-01 2007-05-03 Alcan Tech & Man Ltd Method for producing a packaging material
EP1621333A1 (en) 2004-07-01 2006-02-01 Alcan Technology & Management Ltd. Method for production of a packaging material
EP1616710A1 (en) 2004-07-01 2006-01-18 Alcan Technology & Management Ltd. Process for manufacturing a packing material
FR2873355B1 (en) 2004-07-21 2008-11-14 Manuf Generale De Joints Sa DEGASSING JOINT FOR PLUGS
WO2006021291A1 (en) 2004-08-20 2006-03-02 Hueck Folien Gmbh & Co. Kg Lid, in particular for food packaging, or label, in particular for the neck of a bottle
JP4631358B2 (en) * 2004-09-01 2011-02-16 凸版印刷株式会社 Cover material with open state retention function
EP1814744B1 (en) 2004-11-23 2012-08-08 Constantia Hueck Folien GmbH & Co. KG Tamper-proof identification and authentication feature for packaging materials and security applications
AT501393A1 (en) 2004-12-06 2006-08-15 Constantia Packaging Ag NETWORKABLE AND LUBRICATED PLASTIC CLOSURE PLASTIC
US7713605B2 (en) 2004-12-09 2010-05-11 Tech-Seal Products, Inc. Container seal with integral, heat-releasable promotional token and method
US7740927B2 (en) 2004-12-09 2010-06-22 Tech-Seal Products, Inc. Container seal with integral promotional token and method
US7819266B2 (en) 2004-12-09 2010-10-26 Tech-Seal Products, Inc. Container sealing material having a heat-releasable interlayer
US8057896B2 (en) * 2005-01-06 2011-11-15 Selig Sealing Products, Inc. Pull-tab sealing member with improved heat distribution for a container
WO2006108853A1 (en) 2005-04-15 2006-10-19 Illinois Tool Works Inc. Seal stock laminate
US7648764B2 (en) 2005-06-30 2010-01-19 Uchicago Argonne, Llc Two-piece container seal and method of manufacture
US20070003725A1 (en) * 2005-06-30 2007-01-04 Yousif Paul E Tabbed container seal and method of manufacture
EP1762377B1 (en) 2005-09-07 2008-08-06 Alcan Technology & Management Ltd. A method for the preparation of a laminate
US7531228B2 (en) 2005-11-23 2009-05-12 Alcan Packaging Flexible France Dual scored easy open film
KR100711073B1 (en) 2005-12-16 2007-04-27 (주)영천씰테크 Container sealing product attached opening tap and method for preparing the same
FR2898590B1 (en) 2006-03-16 2008-05-09 Manuf Generale De Joints Soc P PACKAGING FOR JOINTS
ATE431303T1 (en) 2006-03-20 2009-05-15 Selig Sealing Products Inc MULTI-LAYER FILM FOR CLOSING VESSELS
EP1839899B1 (en) 2006-03-29 2014-07-02 Constantia Hueck Folien GmbH & Co. KG Printed security element as control element
DE502006000767D1 (en) 2006-03-29 2008-06-26 Constantia Hueck Folien Gmbh & Analog security feature
EP1857275A1 (en) 2006-05-18 2007-11-21 Hueck Folien GmbH & Co. KG Manufacturing process of high resolution flexoprinting products
US20070298273A1 (en) 2006-06-27 2007-12-27 Bemis Clysar, Inc. Multilayer shrink films having a core layer of EVA/ionomer blend
DE102006030074B3 (en) 2006-06-28 2007-07-26 Alfelder Kunststoffwerke Herm. Meyer Gmbh Sealing disk for a container, e.g. holding foodstuffs or wine, has a layer fused to the opening by induction heat and a layer to absorb oxygen from the contents
DE102006030118B3 (en) 2006-06-28 2007-05-10 Alfelder Kunststoffwerke Herm. Meyer Gmbh Sealing lid for condiment dispenser has lid panel with perforations over part of its area and sealing foil for perforations
NZ573370A (en) 2006-06-28 2012-04-27 Alfelder Kunstoffwerke Herm Meyer Gmbh Sealing insert with a coloured adhesive layer sandwiched between support layer and transparent laminated film
DE102006030082B3 (en) 2006-06-28 2007-09-06 Alfelder Kunststoffwerke Herm. Meyer Gmbh Disc seal used inside screw cap of shaker-container for e.g. spices, includes perforated, plastic-reinforced aluminum foil layer used for induction heating
BE1017200A3 (en) 2006-07-03 2008-04-01 Tekni Plex Europ Nv FILM STRUCTURE WITH HIGH OXYGEN BARRIER PROPERTIES AND METHOD FOR MANUFACTURING SUCH FILM STRUCTURE.
WO2008014483A1 (en) 2006-07-28 2008-01-31 Alcan Packaging Flexible France Coextruded film with polylactic acid (pla) and ethylene vinyl acetate (eva)
WO2008027036A1 (en) 2006-08-29 2008-03-06 Tech-Seal Products, Inc. Tabbed container seal and method of manufacture
CA2662165A1 (en) 2006-08-29 2008-03-06 Tech-Seal Products, Inc. Two-piece container seal and method of manufacture
US20080073308A1 (en) 2006-09-25 2008-03-27 Yousif Paul E Tabbed container seal and method of manufacture
EP2102003A2 (en) 2006-10-18 2009-09-23 Tekni-Plex Europe, Naamloze Vennootschap Method for manufacturing a multi-layered film and film manufactured by said method
DE202006016691U1 (en) 2006-10-31 2007-01-04 Hueck Folien Gmbh & Co. Kg Packaging foil for packing chocolate-Easter bunny figure, has composite film in the form of aluminum foil with plastic foil or plastic film made of polypropylene, polyester and polyethylene terephthalate
MX2009006498A (en) 2006-12-18 2009-06-26 Alcan Packaging Flexible France High release nip roll assembly.
EP1968020A1 (en) 2007-03-03 2008-09-10 Constantia Hueck Folien GmbH & Co. KG Copy protection for packaging and safety foil
FR2913744B1 (en) 2007-03-14 2009-05-01 Manuf Generale De Joints Soc P NEW SECONDARY JOINT
FR2913672B1 (en) 2007-03-14 2011-08-19 Joints Manuf Generale THERMOSCELLABLE JOINT
DE102007022935B4 (en) 2007-05-14 2009-04-30 Alfelder Kunststoffwerke Herm. Meyer Gmbh Sealing insert for container closures
FR2916157A1 (en) 2007-05-16 2008-11-21 Manuf Generale De Joints Soc P Sealable joint manufacturing method for closing container, involves forming cut in form of cap, and forming another cut in form of support till support band/capping band interface, where priming of latter cut interferes support band side
FR2916156A1 (en) 2007-05-16 2008-11-21 Manuf Generale De Joints Soc P METHOD FOR PRODUCING A SEALABLE SEAL FOR THE CLOSURE OF A CLOSURE CONTAINER BY CAP OR CAPSULE
EP1995054A1 (en) 2007-05-24 2008-11-26 Constantia Hueck Folien GmbH & Co. KG Packaging material
EP1998550A1 (en) 2007-05-24 2008-12-03 Constantia Hueck Folien GmbH & Co. KG Morphological security feature
WO2008148176A1 (en) 2007-06-08 2008-12-11 Tekni-Plex Europe, Naamloze Vennootschap Multi-layer high moisture barrier film for use in the production of pharmaceutical or medical thermoformed blister packs and a method for manufacturing such a film
FR2921347B1 (en) 2007-09-25 2011-08-19 Joints Manuf Generale TAPPED SEAL FOR CLOSING OF A CLOSURE CONTAINER BY CAP OR CAPSULE
KR100886955B1 (en) 2007-10-25 2009-03-09 (주)영천씰테크 Induction sealing product of container attached tracing window
KR100840926B1 (en) 2007-11-22 2008-06-24 (주)영천씰테크 Paper cup of induction heat and manufacturing method thereof
DE602008002214D1 (en) 2008-01-30 2010-09-30 Amcor Flexibles Transpac Tamper-evident puncture packaging
MX2010008488A (en) 2008-02-05 2011-05-30 Amcor Flexibbles Kreuzlingen Ltd Cover and method for the production thereof.
WO2009105858A1 (en) 2008-02-28 2009-09-03 Winpak Heat Seal Packaging Inc. Extrusion-coated lidding foil for push-through blister packaging
US20100155288A1 (en) 2008-12-15 2010-06-24 Alcan Technology & Management Ltd Multi-layer laminate material
DE202009000245U1 (en) 2009-01-09 2009-03-12 Constantia Hueck Folien Gmbh & Co. Kg Packaging composite material
MX2009002244A (en) 2009-02-27 2010-08-27 Laminados Facarlyte S A De C V Guarantee seal with pull-tab for containers and a method of manufacture.
FR2943322B1 (en) 2009-03-18 2011-05-13 Joints Manuf Generale TAPPED SEAL FOR CAPTURING A CLOSURE CONTAINER BY CAP OR CAPSULE AND METHOD FOR MANUFACTURING THE SAME
FR2943321B1 (en) 2009-03-18 2013-12-27 Joints Manuf Generale PERFORATED OPENING HAVING A TAPPING TAB FOR CLOSING A CONTAINER
DE102009016312B3 (en) 2009-04-06 2010-07-15 Alfelder Kunststoffwerke Herm. Meyer Gmbh Sealing washer with tab
DE202010017996U1 (en) 2009-09-03 2013-07-29 Constantia Teich Gmbh Lid with grip tab
AT11583U1 (en) 2009-09-07 2011-01-15 Teich Ag CONTAINER WITH BOARD AND COVER
DE102009043310A1 (en) 2009-09-29 2011-04-28 Constantia Hueck Folien Gmbh & Co. Kg Tear-resistant packaging composite film and packaging

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5381914A (en) * 1991-05-09 1995-01-17 Toyo Seikan Kaisha, Ltd. Container closure with liner

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8057896B2 (en) 2005-01-06 2011-11-15 Selig Sealing Products, Inc. Pull-tab sealing member with improved heat distribution for a container
US8715825B2 (en) 2005-01-06 2014-05-06 Selig Sealing Products, Inc. Two-piece pull-tab sealing member with improved heat distribution for a container
US8852725B2 (en) 2006-03-20 2014-10-07 Selig Sealing Products, Inc. Vessel closing laminate
US8906185B2 (en) 2006-12-20 2014-12-09 Selig Sealing Products, Inc. Laminate
US10005598B2 (en) 2006-12-20 2018-06-26 Selig Sealing Products, Inc. Laminate
US8522990B2 (en) 2007-03-23 2013-09-03 Selig Sealing Products, Inc. Container seal with removal tab and holographic security ring seal
US8703265B2 (en) 2007-03-23 2014-04-22 Selig Sealing Products, Inc. Container seal with removal tab and piercable holographic security seal
US9624008B2 (en) 2007-03-23 2017-04-18 Selig Sealing Products, Inc. Container seal with removal tab and security ring seal
US8201385B2 (en) 2007-08-24 2012-06-19 Selig Sealing Products, Inc. Multi-purpose covering and method of hygienically covering a container top
US9278506B2 (en) 2007-08-24 2016-03-08 Selig Sealing Products, Inc. Non-metallic, tabbed multi-purpose covering for hygienically covering a container top
US10259626B2 (en) 2012-03-08 2019-04-16 Selig Sealing Products, Inc. Container sealing member with protected security component and removal tab

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US20090304964A1 (en) 2009-12-10
CN101636261A (en) 2010-01-27
EP1837288B1 (en) 2009-05-13
NZ572512A (en) 2011-07-29
CA2646951A1 (en) 2007-09-27
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US20120107577A1 (en) 2012-05-03
ATE431303T1 (en) 2009-05-15
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AU2007227488B2 (en) 2012-07-05
AU2007227488A1 (en) 2007-09-27
US8852725B2 (en) 2014-10-07
AR059924A1 (en) 2008-05-07
WO2007109113A3 (en) 2009-09-24
CA2646951C (en) 2015-11-03
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DE602006006791D1 (en) 2009-06-25
ES2326754T3 (en) 2009-10-19

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